We used one approach based on a total model of general balance, the model of the world trade analysis project (Global Trade Analysis Project, GTAP), which supplements the model of partial balance modelling of food security measures projections in sudanosahelian zone of Cameroon, area often prone to food crises. Models of partial balance (Aglink) and of general balance (GTAP) used in this study bring each other different meaning on the problem and produce sets distinct from food security measures. Among these measurements, some represent characteristics common to both types of model, but in a general view, their differences reflect the divergence of the priorities fixed at the time of development of the models. In most of the agricultural products studies, the model of balance General (GTAP) give possibilities to extend the analysis of commercial liberalization to local “embryonary” agro alimentary industry, non-agricultural products and services. with the interactions between these sectors via the markets of products intermediaries, as with competition that the producers deliver themselves for to use resources limited and to their contribution to the income of households.